scholarly journals Modeling and Experiments of the Gain and Noise Figure for an Irradiated Erbium-Ytterbium Co-Doped Fiber Amplifier

2014 ◽  
Vol 04 (02) ◽  
pp. 53-61
Author(s):  
Sherif S. Nafee ◽  
Taymour A. Hamdalla
Keyword(s):  
Noise Figure ◽  
Fiber Amplifier ◽  
Modeling And Experiments ◽  
Co Doped

An efficient L-band Zirconia Yttria Aluminum Erbium co-doped fiber amplifier with 1480nm pumping

2019 ◽  
Vol 28 (02) ◽  
pp. 1950018
Author(s):  
Aya A. Almukhtar ◽  
Alabbas A. Al-Azzawi ◽  
P. H. Reddy ◽  
S. Das ◽  
A. Dhar ◽  
...  
Keyword(s):  
Noise Figure ◽  
Wavelength Region ◽  
Fiber Amplifier ◽  
Gain Medium ◽  
Double Pass ◽  
Erbium Doped Fiber Amplifier ◽  
Optical Amplification ◽  
Single Pass ◽  
Flat Gain ◽  
Co Doped

The optical amplification performance of the proposed Zirconia Yttria Aluminum Erbium co-doped fiber (Zr-EDF) was compared for two different pumping schemes; 1480 and 980[Formula: see text]nm. An efficient [Formula: see text]-band amplifier was achieved using 3[Formula: see text]m length of Zr-EDF while 1480[Formula: see text]nm pumping is found to provide higher attainable gain and better noise figure as compared to 980[Formula: see text]nm pumping. At a pumping wavelength of 1480[Formula: see text]nm and an input signal power of [Formula: see text]10[Formula: see text]dBm, the proposed amplifier provides a relatively flat-gain of about 13.3[Formula: see text]and 17.3[Formula: see text]dB with single-pass and double-pass configuration, respectively, where the gain variation was less than 1[Formula: see text]dB within a wavelength region of 1560–1600[Formula: see text]nm. The noise figures of the proposed Zr-EDFA were maintained below 8 and 14.5[Formula: see text]dB for single-pass and double-pass arrangement, respectively, within the flat-gain region. Compared to the conventional amplifier configured with silica based erbium-doped fiber amplifier, the proposed Zr-EDF-based amplifier achieves a higher and flatter gain and lower noise figure at [Formula: see text]-band region even though it uses a shorter length of gain medium.

scholarly journals Cladding-Pumped Erbium/Ytterbium Co-Doped Fiber Amplifier for C-Band Operation in Optical Networks

2021 ◽  
Vol 11 (4) ◽  
pp. 1702 ◽  
Author(s):  
Andis Supe ◽  
Sergejs Olonkins ◽  
Aleksejs Udalcovs ◽  
Ugis Senkans ◽  
Rihards Mūrnieks ◽  
...  
Keyword(s):  
Optical Networks ◽  
Noise Figure ◽  
Maximum Output Power ◽  
Optical Power ◽  
Wavelength Dependence ◽  
Fiber Amplifier ◽  
System Level ◽  
Maximum Output ◽  
Saturation Regime ◽  
Co Doped

Space-division multiplexing (SDM) attracts attention to cladding-pumped optical amplifiers, but they suffer from a low pump power conversion efficiency. To address this issue, ytterbium (Yb3+) and erbium (Er3+) co-doping is considered as an effective approach. However, it changes the gain profile of Er3+-doped fiber amplifiers and induces the gain difference between optical wavelengths in the C-band, significantly limiting the effective band of the dense wavelength-division multiplexed (DWDM) system. This paper is devoted to a detailed study of a cladding-pumped Er3+/Yb3+ co-doped fiber amplifier (EYDFA) through numerical simulations aiming to identify a configuration, before assembling a similar EYDFA in our laboratory premises that ensures the desired performance. The simulation model is based on a commercial double cladding EYDF whose parameters are experimentally extracted and fed to the EYDFA setup for the system-level studies. We investigate the wavelength dependence of the amplifier’s characteristics (absolute gain, gain uniformity, noise figure) and bit error rate (BER) performance for several DWDM channels and their optical power. The obtained results show that a 7 m long EYDF and co-propagating pump direction is preferable for the EYDFA with a 3 W pump source at 975 nm and with the given gain medium characteristics for WDM applications. For instance, it ensures a gain of 19.7–28.3 dB and a noise figure of 3.7–4.2 dB when amplifying 40 DWDM channels with the input power of −20 dBm per channel. Besides, we study EYDFA gain bandwidth and the maximum output power when operating close to the saturation regime and perform a sensitivity analysis showing how the doped fiber’s absorption and emission cross-sections impact the amplification process through energy transfer from Yb3+ to Er3+. Finally, we quantify the power penalty introduced by the EYDFA; the results show that it is not higher than 0.1 dB when amplifying 40 × 10 Gbps non-return-to-zero on-off keying signals from −20 dBm/channel.

Pump Laser Automatic Signal Control for Erbium-Doped Fiber Amplifier Gain, Noise Figure, and Output Spectral Power

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
I. S. Amiri ◽  
Ahmed Nabih Zaki Rashed ◽  
P. Yupapin
Keyword(s):  
Noise Figure ◽  
Spectral Power ◽  
Power Level ◽  
Fiber Amplifier ◽  
Pump Laser ◽  
Output Power Level ◽  
Signal Control ◽  
Erbium Doped Fiber Amplifier ◽  
Erbium Doped ◽  
Amplifier Gain

AbstractThis paper has simulated the pump laser automatic signal control for erbium-doped fiber amplifier gain, noise figure, and output spectral power. Signal gain and noise figure are deeply studied in relation to laser pump power variations at operating pumping wavelengths of 980 nm and 1,480 nm for previous and proposed models. Similar to the study of the light signal to noise ratio, output power level and maximum Q factor are also simulated versus EDFA amplifier length at pumping power of 500 mW and different pumping wavelength by using the proposed model. The obtained results are better by using a pumping wavelength of 1,480 nm than a pumping wavelength of 980 nm. The optimum EDFA amplifier is 5 m, which gives better performance than other amplifier lengths.

Optimized flat supercontinuum generation in high nonlinear fibers pumped by a nanosecond Er/Yb Co-doped fiber amplifier

Laser Physics ◽  
2014 ◽  
Vol 24 (4) ◽  
pp. 045104 ◽  
Author(s):  
D Q Ouyang ◽  
C Y Guo ◽  
S C Ruan ◽  
P G Yan ◽  
H F Wei ◽  
...  
Keyword(s):  
Fiber Amplifier ◽  
Supercontinuum Generation ◽  
Nonlinear Fibers ◽  
Co Doped

scholarly journals Gain improvement by internal laser cavity in Tm3+/Yb3+-co-doped tellurite fiber amplifier pumped by 980-nm laser

2006 ◽  
Vol 14 (19) ◽  
pp. 8535 ◽  
Author(s):  
Jun Chang ◽  
Qingpu Wang ◽  
Gangding Peng ◽  
Xingyu Zhang ◽  
Zejin Liu ◽  
...  
Keyword(s):  
Laser Cavity ◽  
Fiber Amplifier ◽  
Co Doped

Two-color optically synchronized ultrashort pulses from a Tm/Yb-co-doped fiber amplifier

2014 ◽  
Vol 39 (7) ◽  
pp. 2008 ◽  
Author(s):  
M. Yu. Koptev ◽  
E. A. Anashkina ◽  
A. V. Andrianov ◽  
S. V. Muravyev ◽  
A. V. Kim
Keyword(s):  
Ultrashort Pulses ◽  
Fiber Amplifier ◽  
Co Doped

Single Stage C-Band Erbium-Doped Fiber Amplifier (EDFA) Development and Performance Evaluation

2018 ◽  
Vol 7 (2) ◽  
pp. 41-49
Author(s):  
Sami D. Alaruri
Keyword(s):  
Conversion Efficiency ◽  
Noise Figure ◽  
Fiber Amplifier ◽  
Single Stage ◽  
Erbium Doped Fiber Amplifier ◽  
Signal Gain ◽  
Laser Pump ◽  
Mathematical Expressions ◽  
Erbium Doped ◽  
And Performance

In this work, a single-stage C-band erbium-doped fiber amplifier (EDFA) has been constructed and characterized. Gain (G) and noise figure (NF) measurements collected for the C-band EDFA as a function of wavelength (1528.8 to 1562.3 nm) and laser pump powers are discussed. Further, the EDFA conversion efficiency (CE) as a function of laser pump powers is presented. Simplified mathematical expressions for the EDFA gain, NF, and CE are provided. The C-band EDFA signal gain remained flat in the spectral region 1539 to 1562 nm. Moreover, the C-band EDFA NF increased with wavelength and decreased with the 1480 nm laser pump powers. Additionally, the C-band EDFA maximum achieved conversion efficiency and signal gain is 22.64% at P1=19.49 mW and 22.6 dB at 1531.1 nm, respectively.

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